We present the first observation of the baryon decay Lambda(0)(b)->Lambda(+)(c)pi(-) followed by Lambda(+)(c)-> pK(-)pi(+) in 106 pb(-1) p (p) over bar collisions at root s=1.96 TeV in the CDF experiment. In order to reduce systematic error, the measured rate for Lambda(0)(b) decay is normalized to the kinematically similar meson decay (B) over bar (0)-> D(+)pi(-) followed by D(+)->pi(+)K(-)pi(+). We report the ratio of production cross sections (sigma) times the ratio of branching fractions (B) for the momentum region integrated above p(T)> 6 GeV/c and pseudorapidity range |eta|< 1.3: (sigma(p (p) over bar ->Lambda(0)(b)X)/sigma(p (p) over bar ->(B) over bar (0)X))x(B(Lambda(0)(b)->Lambda(+)(c)pi(-))/B((B) over bar (0)-> D(+)pi(-)))=0.82 +/- 0.08(stat) +/- 0.11(syst) +/- 0.22(B(Lambda(+)(c)-> pK(-)pi(+))).

A., A., J., A., T., A., T., A., M. G., A., D., A., et al. (2007). Measurement of (sigma(Lambda (0) (b)/sigma((B)over bar (0))) x (B(Lambda(0)(b)->Lambda(+)(c)pi(-))/B((B)over-bar(0)-> D(+)pi(-))) in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 98(12), 122002-1-122002-7 [10.1103/PhysRevLett.98.122002].

Measurement of (sigma(Lambda (0) (b)/sigma((B)over bar (0))) x (B(Lambda(0)(b)->Lambda(+)(c)pi(-))/B((B)over-bar(0)-> D(+)pi(-))) in p(p)over-bar collisions at root s=1.96 TeV

CIOCCI, MARIA AGNESE;
2007-01-01

Abstract

We present the first observation of the baryon decay Lambda(0)(b)->Lambda(+)(c)pi(-) followed by Lambda(+)(c)-> pK(-)pi(+) in 106 pb(-1) p (p) over bar collisions at root s=1.96 TeV in the CDF experiment. In order to reduce systematic error, the measured rate for Lambda(0)(b) decay is normalized to the kinematically similar meson decay (B) over bar (0)-> D(+)pi(-) followed by D(+)->pi(+)K(-)pi(+). We report the ratio of production cross sections (sigma) times the ratio of branching fractions (B) for the momentum region integrated above p(T)> 6 GeV/c and pseudorapidity range |eta|< 1.3: (sigma(p (p) over bar ->Lambda(0)(b)X)/sigma(p (p) over bar ->(B) over bar (0)X))x(B(Lambda(0)(b)->Lambda(+)(c)pi(-))/B((B) over bar (0)-> D(+)pi(-)))=0.82 +/- 0.08(stat) +/- 0.11(syst) +/- 0.22(B(Lambda(+)(c)-> pK(-)pi(+))).
2007
A., A., J., A., T., A., T., A., M. G., A., D., A., et al. (2007). Measurement of (sigma(Lambda (0) (b)/sigma((B)over bar (0))) x (B(Lambda(0)(b)-&gt;Lambda(+)(c)pi(-))/B((B)over-bar(0)-&gt; D(+)pi(-))) in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 98(12), 122002-1-122002-7 [10.1103/PhysRevLett.98.122002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/36148
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